socket operation on non socket

implementation, we usually need to treat the two processes differently, A process waits for another process to send a message to itself. After receiving the message, it processes the message and sends the result back. We call processes that process messages and provide services as servers and processes that process messages and requests as clients. The general process is that the client sends a message to the server. The server process receives the message for processing and sends the processin

immediately.In addition, in many cases, Socket programming is implemented on the client and server based on different situations, and the application program is compiled on the client to send requests to the specified port on the server, at the same time, the preparation of the server application to process the request has been mentioned in the above description; of course, not all Socket programming requi

: Net_link.c#include #include #include #include #include #include #define Netlink_test 21struct sock *nl_sk = NULL;EXPORT_SYMBOL_GPL (NL_SK);void Nl_data_ready (struct sk_buff *__skb){struct Sk_buff *skb;struct NLMSGHDR *nlh;U32 pid;int RC;int len = nlmsg_space (1200);Char str[100];PRINTK ("Net_link:data is ready to read./n");SKB = Skb_get (__SKB);if (Skb->len >= nlmsg_space (0)) {NLH = NLMSG_HDR (SKB);PRINTK ("Net_link:r

Sockets are used for interprocess communication. Interprocess communication is typically based on a client-server model. At this point, the client-server is an application that can interact with each other. The interaction between the client and the server requires a connection. Socket programming is responsible for establishing an interactive connection between applications.Using PHP to create a simple client-server, develop a client to send a string

executes network operations (such as send and receive) will not return the control to the caller until the operation is complete. In asynchronous mode, these calls return immediately. In addition, in many cases, socket programming is implemented on the client and server based on different situations, and the application program is compiled on the client to send requests to the specified port on the server, at the same time, the preparation of th

to receive a maximum of specified bytes at a time. Therefore, it is repeatedly received in a while loop until recv () returns NULL data, indicates that the receiving is complete and the loop is exited. After receiving the data, call the close () method to close the Socket. In this way, a complete network communication is over: # Close connection s. close () The received data includes the HTTP header and the webpage itself. We only need to separate t

*/SOCKFD=socket (Af_inet,sock_stream,0); if(sockfd0) {printf ("calling the socket function to create a socket descriptor error! \ n"); Exit (1); } printf ("call the socket function to establish the socket descriptor successfully!

programming is implemented on the client and server based on different situations, and the application program is compiled on the client to send requests to the specified port on the server, at the same time, the preparation of the server application to process the request has been mentioned in the above description; of course, not all socket programming requires you to strictly write these two programs; depending on the application situation, you ca

$srv _addr = $srv _info{"Srv_ip"}; My $srv _port = $srv _info{"Srv_port"}; My $sock = io::socket::inet->new (peeraddr => "$srv _addr", Peerport => "$srv _port", Type => Sock_stream, B Locking => 1, # Timeout => 5, Proto => "tcp") or Die "Can not create socket connect." $@"; $sock->send ("Hello server!\n", 0) or warn "Send failed: $!, $@"; $sock->autoflush (1)

asynchronous mode, these calls return immediately. In addition, in many cases, Socket programming is implemented on the client and server based on different situations, and the application program is compiled on the client to send requests to the specified port on the server, at the same time, the preparation of the server application to process the request has been mentioned in the above description; of course, not all

*lanform;Enum PROTO {tcp=0,udp=1};SOCKET M_socket=invalid_socket;PROTO m_protocol=tcp;__fastcall tlanform::tlanform (tcomponent* Owner): Tform (Owner){}void __fastcall tlanform::formcreate (tobject *sender){:: SendMessage (prot->handle,cb_setcursel,0,0);}void __fastcall tlanform::onrecv (tmessage message){Char buf[4096];int Nlen;struct sockaddr_in from;int nlength=sizeof (struct sockaddr_in);Switch (wsagetselectevent (message.lparam)){Case Fd_read:Sw

Import Socket sock = Socket.socket (socket.af_inet, socket. SOCK_STREAM) baidu_ip = Socket.gethostbyname (' baidu.com ') sock.connect ((BAIDU_IP)) print (' connected to%s '% baidu_ IP) req_msg = [ ' get/http/1.1 ', ' user-agent:curl/7.37.1 ', ' Host:baidu.com ', ' Accept: */* ',] delimiter = ' \ r \ n ' sock.send (Delimiter.join (req_msg)) Soc

model using the Accept block: it belongs to the synchronous blocking IO model, the code is as follows: socket_server.php **/set_time_limit (0); Class Socketserver {private static $socket; function Socketserver ($port) {global $errno, $errstr; if ($port socket = str Eam_socket_server ("tcp://0.0.0.0:{$port}", $errno, $ERRSTR); if (! $socket) Die ("$errstr ($errno

that Client send radius to server and server compute area and return to Client.Server.javaImportJava.awt.BorderLayout;ImportJava.io.DataInputStream;ImportJava.io.DataOutputStream;ImportJava.io.IOException;ImportJava.net.ServerSocket;ImportJava.net.Socket;ImportJava.util.Date;ImportJavax.swing.JFrame;ImportJavax.swing.JScrollPane;ImportJavax.swing.JTextArea; Public class Server extends JFrame { PrivateJTextArea Jta=NewJTextArea (); Public Static void Main(string[] args) {NewServer (); } Publ

Using codePurpose: To develop a client to send a string message to the server, and the service side reverses the same information back to the client.PHP Server1th Step: Set variables, such as "host" and "Port""127.0.0.1"; set_time_limit (0); The port number can be any positive integer between 1024-65535.2nd step: Create a socketDie ("Could not create socket\n");3rd step: Bind

servaddr; - CharBuff[maxline]; - - time_t ticks; +LISTENFD = socket (af_inet, Sock_stream,0); - +Bzero (AMP;SERVADDR,sizeof(SERVADDR)); Aservaddr.sin_family =af_inet; atSERVADDR.SIN_ADDR.S_ADDR =htonl (inaddr_any); -Servaddr.sin_port = htons (1513); - -Bind (LISTENFD, (structSOCKADDR *) servaddr,sizeof(SERVADDR)); - Listen (LISTENFD, Listenq); - in for( ; ; ) { -CONNFD = Accept (LISTENFD, (structSOCKADDR *) NULL, and NULL); to +Ticks =T

provide you with a lightweight solution and more control. , NB Sp , NB Sp , NB Sp , NB Sp , NB Sp , NB Sp , NB Sp , N Bsp , NB Sp , NB Sp two Net. Socket Object1.Socket object

order, otherwise the bad order instruction is returned invalid currenttime = "Query time orders". Equalsignore Case (body), new Date (). toString (): "Bad order"; }//Response client Out.print (currenttime); catch (Exception e) {e.printstacktrace (); } finally{if (in!= null) { try {in.close (); catch (IOException e) {//TODO auto-generated catch block E.printstacktrace (); } in = null; } if (out!= null) {out.cl

(); Data transmission-send (), recv (); Multiplexing of input/output -- select (); Close socket -- closesocket () 3.2. socket call provided by php: Accept connection -- accept connect () Bind () Close socket-close () Initialize connection-connect () Listener port-listen () Read socket-read () Create

() ↓ Accept () ← Connect () Recv ()/Send () ←→ Send ()/recv () 3. PHP Basic Socket Call: 3.1.) Basic socket Call Create socket--socket ();Bind the Machine port--bind ();Establish connection--connect